| Nominal Area | B & SG (AWG) | Stranding and Wire Diameter | Approximate Overall (Equivalent) Diameter | Calculated Electrical Area | Nominal Weight | Standard Resistance at 20°C(68°F) (Plain Wire) | Nominal Area | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch2 | mm2 | cir mills | inch | mm | inch | mm | inch2 | mm2 | cir mils | lb/1000 yd | kg/km | ohm/1000 yd | ohm/km | inch2 | |
| – | 0.50 | 1020 | 20 | 0.32 | 0.81 | 0.0008042 | 0.5188 | 1024 | 9.30 | 4.613 | 30.38 | 33.23 | – | ||
| – | – | 1020 | 20 | 7/.0121 | 7/.307 | .036 | .091 | .0007914 | 0.5106 | 1008 | 9.47 | 4.698 | 30.88 | 33.77 | – |
| .001 | – | – | – | .036 | 0.91 | .001018 | 0.6567 | 1296 | 11.77 | 5.838 | 24.01 | 26.26 | .001 | ||
| .001 | – | – | – | 3/.020 | 3/.508 | .043 | 1.09 | .000924 | 0.5961 | 1176 | 11.11 | 5.512 | 26.45 | 28.92 | .001 |
| – | 0.75 | – | – | .039 | 0.99 | .001195 | 0.7707 | 1524 | 13.81 | 6.851 | 20.46 | 22.37 | – | ||
| – | – | 1620 | 18 | 1/.0403 | 1/1.02 | .040 | 1.02 | .00128 | 0.8239 | 1630 | 14.75 | 7.316 | 19.16 | 20.95 | – |
| – | – | 1620 | 18 | .046 | 1.16 | .001249 | 0.8057 | 1490 | 14.94 | 7.410 | 19.57 | 21.40 | – | ||
| .0015 | – | – | – | 1/.044 | 1/1.12 | .044 | 1.12 | .001521 | 0.9810 | 1936 | 17.58 | 8.721 | 16.07 | 17.58 | .0015 |
| – | 1.0 | – | – | .045 | 1.14 | .001590 | 1.026 | 2025 | 18.39 | 9.122 | 15.36 | 16.80 | – | ||
| – | 1.0 | – | – | 7/.017 | 7/.432 | .051 | 1.30 | .001562 | 1.008 | 1989 | 18.68 | 9.266 | 15.64 | 17.11 | – |
| .002 | – | – | – | .062 | 1.59 | .001943 | 1.253 | 2474 | 23.37 | 11.59 | 12.58 | 13.76 | .002 | ||
| – | – | 2580 | 16 | 1/.0508 | 1/1.29 | .051 | 1.29 | .00203 | 1.308 | 2585 | 23.43 | 11.63 | 12.06 | 13.19 | – |
| – | – | 2580 | 16 | .058 | 1.46 | .001993 | 1.286 | 2537 | 23.83 | 11.82 | 12.26 | 13.41 | – | ||
| – | 1.5 | – | – | 1/.055 | 1/1.40 | .055 | 1.40 | .002376 | 1.533 | 3025 | 27.47 | 13.63 | 10.29 | 11.25 | – |
| – | 1.5 | – | – | .063 | 1.60 | .002384 | 1.538 | 3035 | 28.51 | 14.14 | 10.25 | 11.21 | – | ||
| .003 | – | – | – | 3/.036 | 3/.914 | .078 | 1.97 | .002994 | 1.931 | 3812 | 36.01 | 17.86 | 8.163 | 8.927 | .003 |
| .003 | – | – | – | .064 | 1.63 | .003217 | 2.075 | 4096 | 37.20 | 18.45 | 7.596 | 8.307 | .003 | ||
| – | – | 4110 | 14 | 1/.0641 | 1/1.63 | .064 | 1.63 | .00323 | 2.082 | 4113 | 37.31 | 18.51 | 7.572 | 8.281 | – |
| – | – | 4110 | 14 | .073 | 1.84 | .003166 | 2.042 | 4031 | 37.86 | 18.78 | 7.719 | 8.442 | – | ||
| – | 2.5 | – | – | 1/.071 | 1/1.80 | .071 | 1.80 | .003959 | 2.554 | 5041 | 45.78 | 22.71 | 6.172 | 6.750 | – |
| – | 2.5 | – | – | .081 | 2.06 | .003941 | 2.542 | 5017 | 47.13 | 23.38 | 6.201 | 6.782 | – | ||
| .0045 | – | – | – | 7/.029 | 7/.737 | .087 | 2.21 | .004546 | 2.933 | 5788 | 54.37 | 26.97 | 5.375 | 5.879 | .0045 |
| – | – | 6530 | 12 | .081 | 2.05 | .00513 | 3.308 | 6532 | 59.29 | 29.41 | 4.766 | 52.12 | – | ||
| – | – | 6530 | 12 | 7/.0305 | 7/775 | .092 | 2.32 | .005028 | 3.244 | 6402 | 60.14 | 29.84 | 4.860 | 5.315 | – |
| – | 4 | – | – | .089 | 2.26 | .006221 | 4.014 | 7921 | 71.93 | 35.68 | 3.928 | 4.296 | – | ||
| – | 4 | – | – | 7/.034 | 7/.864 | .102 | 2.59 | .006249 | 4.032 | 4956 | 74.74 | 37.08 | 9.911 | 4.277 | – |
| .007 | – | – | – | .108 | 2.74 | .007005 | 4.520 | 8920 | 83.80 | 41.57 | 3.489 | 3.815 | .007 | ||
| – | – | 10380 | 10 | 1/.1019 | 1/2.59 | .102 | 2.59 | .008155 | 5.261 | 10380 | 94.29 | 46.77 | 2.996 | 3.277 | – |
| – | – | 10380 | 9 | .116 | 2.93 | .008012 | 5.169 | 10200 | 95.83 | 47.54 | 3.050 | 3.335 | – | ||
| – | 6 | – | – | 1/.109 | 1/2.77 | .109 | 2.77 | .009331 | 6.020 | 11880 | 107.9 | 53.52 | 2.619 | 2.864 | – |
| – | 6 | – | – | .126 | 3.21 | .009535 | 6.152 | 12140 | 114.0 | 56.55 | 2.563 | 2.803 | – | ||
| – | – | 13090 | 9 | 1/.114 | 1/2.91 | .1144 | 2.91 | .01028 | 6.634 | 13090 | 118.8 | 58.93 | 2.377 | 2.600 | – |
| – | – | 13090 | 9 | .130 | 3.30 | .01009 | 6.508 | 12840 | 120.7 | 59.86 | 2.422 | 2.649 | – | ||
| .01 | – | – | – | 7/.044 | 7/1.12 | .132 | 3.35 | .01046 | 6.751 | 13320 | 125.2 | 62.11 | 2.335 | 2.555 | .01 |
| – | – | 16510 | 8 | .128 | 3.26 | .01297 | 8.366 | 16510 | 150.0 | 74.36 | 1.884 | 2.061 | – | ||
| – | – | 16510 | 8 | 7/.0486 | 7/1.23 | .146 | 3.70 | .01277 | 8.237 | 18260 | 152.7 | 75.75 | 1.914 | 2.093 | – |
| .0145 | – | – | – | .156 | 3.96 | .01462 | 9.430 | 18610 | 174.8 | 86.71 | 1.672 | 1.828 | .0145 | ||
| – | 10 | – | – | 1/.141 | 1/3.58 | .141 | 3.58 | .01561 | 10.07 | 19880 | 180.5 | 89.54 | 1.565 | 1.711 | – |
| – | 10 | – | – | .162 | 4.12 | .01576 | 10.17 | 20070 | 188.5 | 93.51 | 1.550 | 1.695 | – | ||
| – | – | 20820 | 7 | 1/.1443 | 1/3.67 | .144 | 3.67 | .01635 | 10.55 | 20820 | 189.1 | 93.80 | 1.494 | 1.634 | – |
| – | – | 20820 | 7 | .164 | 4.15 | .01606 | 10.36 | 20440 | 192.0 | 95.24 | 1.522 | 1.664 | – | ||
| – | – | 26240 | 6 | .162 | 4.11 | .02061 | 13.30 | 26240 | 238.3 | 118.2 | 1.185 | 1.296 | – | ||
| – | – | 26240 | 6 | 7/.0612 | 7/1.55 | .184 | 4.66 | .02025 | 13.06 | 25780 | 424.2 | 120.1 | 1.207 | 1.320 | – |
| .0225 | – | – | – | .192 | 4.68 | .02214 | 14.28 | 28190 | 264.9 | 131.4 | 1.104 | 1.207 | .0225 | ||
| – | 16 | – | – | 7/.068 | 7/173 | .204 | 5.18 | .02499 | 16.12 | 31820 | 299.0 | 148.3 | 0.9777 | 1.068 | – |
| – | – | 33090 | 5 | .206 | 5.24 | .02559 | 16.51 | 32580 | 306.0 | 151.8 | .9550 | 1.044 | – | ||
| .03 | – | – | – | 19/.044 | 19/1.12 | .220 | 5.59 | .02835 | 18.29 | 36100 | 340.4 | 168.9 | .08619 | 0.9425 | .03 |
| – | – | 41740 | 4 | .232 | 5.88 | .03222 | 20.78 | 41020 | 385.3 | 191.1 | 0.7565 | 0.8295 | – | ||
| – | 25 | – | – | 7/.085 | 7/2.16 | .255 | 6.48 | .03905 | 15.19 | 49720 | 467.1 | 231.7 | 0.6257 | 0.6843 | – |
| .04 | 25 | – | – | 19/.052 | 19/1.32 | .260 | 6.60 | .03960 | 25.55 | 50420 | 475.3 | 235.8 | 0.6171 | 0.6748 | .04 |
| – | – | 53620 | 3 | .260 | 6.61 | .04063 | 26.21 | 51730 | 486.0 | 241.1 | 0.6014 | 0.6577 | – | ||
| – | – | 66360 | 2 | 7/.0974 | 7/2.47 | .292 | 7.42 | .05128 | 33.08 | 65290 | 613.3 | 304.2 | 0.4765 | 0.5211 | – |
| – | 35 | – | – | .300 | 7.62 | .05405 | 34.87 | 68820 | 646.5 | 320.7 | 0.4521 | 0.4944 | – | ||
| – | 35 | – | – | 19/.061 | 19/1.55 | .305 | 7.75 | .05450 | 35.16 | 69390 | 654.2 | 324.5 | 0.4484 | 0.4904 | – |
| .06 | – | – | – | 19/.064 | 19/1.83 | .320 | 8.13 | .05999 | 98.70 | 76380 | 720.2 | 357.3 | 0.4047 | 0.4455 | .06 |
| – | – | 83690 | 1 | .332 | 8.43 | .06457 | 41.66 | 82210 | 775.1 | 384.5 | 0.3784 | 0.4139 | – | ||
| .075 | – | – | – | 19/.072 | 19/1.83 | .360 | 9.14 | .07592 | 48.98 | 96660 | 911.4 | 452.1 | 0.3219 | 0.3520 | .075 |
| – | 50 | – | – | .365 | 9.27 | .07805 | 50.35 | 99380 | 936.9 | 464.8 | 0.3131 | 0.3424 | – | ||
| – | – | 105600 | 1/0 | .0745 | 19/1.89 | .373 | 9.46 | .08129 | 52.44 | 103500 | 975.8 | 484.1 | 0.3006 | 0.3288 | – |
| .1 | – | – | – | .415 | 10.5 | .1009 | 65.09 | 128500 | 1212 | 601.2 | 0.2422 | 0.2649 | .1 | ||
| – | – | 133100 | 2/0 | 19/.0837 | 19/2.13 | .419 | 10.6 | .1026 | 66.19 | 130600 | 1232 | 611.1 | 0.2382 | 0.2605 | – |
| – | 70 | – | – | .430 | 10.9 | .1083 | 69.87 | 137900 | 1300 | 645.0 | 0.2256 | 0.2467 | – | ||
| Nominal Area | B & SG (AWG) | Stranding and Wire Diameter | Approximate Overall (Equivalent) Diameter | Calculated Electrical Area | Nominal Weight | Standard Resistance at 20°C(68°F) (Plain Wire) | Nominal Area | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| inch2 | mm2 | cir mills | inch | mm | inch | mm | inch2 | mm2 | cir mils | lb/1000 yd | kg/km | ohm/1000 yd | ohm/km | inch2 | |
| .12 | - | - | - | 37/.064 | 37/1.63 | .448 | 11.4 | .1168 | 75.33 | 148700 | 1403 | 696.0 | 0.2093 | 0.2289 | .12 |
| - | - | 167800 | 3/0 | 19/.094 | 19/2.39 | .470 | 11.9 | .1294 | 83.49 | 164800 | 1553 | 770.4 | 0.1888 | 0.2065 | - |
| - | - | 167800 | 3/0 | 37/.0673 | 37/1.71 | .471 | 12.0 | .1291 | 83.29 | 164400 | 1551 | 769.4 | 0.1893 | 0.2070 | - |
| - | 95 | - | - | 19/.101 | 19/2.57 | .505 | 12.8 | .1494 | 96.39 | 190200 | 1793 | 889.4 | 0.1636 | 0.1789 | - |
| .15 | 95 | - | - | 37/.072 | 37/1.83 | .504 | 12.8 | .1478 | 95.34 | 188100 | 1776 | 881.0 | 0.1654 | 0.1808 | .15 |
| - | - | 211600 | 4/0 | 19/.1055 | 19/2.68 | .528 | 13.4 | .1630 | 105.2 | 207500 | 1957 | 970.8 | 0.1499 | 0.1639 | - |
| - | 120 | - | 37/.081 | 37/2.06 | .567 | 14.4 | .1870 | 120.7 | 238100 | 2247 | 1115 | 0.1307 | 0.1429 | - | |
| - | - | 250000 | - | 37/.0822 | 37/2.09 | .575 | 14.6 | .1926 | 124.3 | 245200 | 2314 | 1148 | 0.1269 | 0.1388 | - |
| .20 | - | - | - | 37/.083 | 37/2.11 | .581 | 14.8 | .1964 | 126.7 | 250000 | 2360 | 1171 | 0.1244 | 0.1361 | .20 |
| - | 150 | 300000 | - | 37/.090 | 37/2.29 | .630 | 16.0 | .2309 | 149.0 | 294000 | 2774 | 1376 | 0.1058 | 0.1157 | - |
| .25 | - | - | - | 37/.093 | 37/2.36 | .651 | 16.5 | .2465 | 159.1 | 313900 | 2963 | 1470 | 0.09911 | 0.1084 | .25 |
| - | - | 350000 | - | 37/.0973 | 37/2.47 | .681 | 17.3 | .2699 | 174.1 | 343600 | 3243 | 1609 | 0.09055 | 0.09903 | - |
| - | 185 | - | - | 37/1.00 | 37/2.54 | .700 | 17.8 | .2851 | 183.9 | 363000 | 3426 | 1699 | 0.08572 | 0.09375 | - |
| .3 | - | - | - | 37/.103 | 372.62 | .721 | 18.3 | .3024 | 195.1 | 385000 | 3634 | 1803 | 0.08081 | 0.08837 | .3 |
| - | - | 400000 | - | 37.104 | 37/2.64 | .728 | 18.5 | .3083 | 198.9 | 392500 | 3705 | 1838 | 0.07926 | 0.08668 | - |
| - | 240 | - | - | 37/.114 | 37/2.90 | .798 | 20.3 | .3705 | 239.0 | 471700 | 4452 | 2208 | 0.06596 | 0.07214 | - |
| - | 240 | - | - | 61/.089 | 61/2.26 | .801 | 20.3 | .3722 | 240.0 | 473900 | 4474 | 2219 | 0.06566 | 0.07181 | - |
| - | - | 500000 | - | 37/.1162 | 37/2.95 | .813 | 20.7 | .3849 | 248.3 | 490100 | 4625 | 2294 | 0.06349 | 0.06943 | - |
| - | - | 500000 | - | 61/.0905 | 61/2.30 | .814 | 20.7 | .3848 | 248.3 | 490000 | 4626 | 2295 | 0.06350 | 0.06944 | - |
| .4 | - | - | - | 61/.093 | 61/2.36 | .837 | 21.3 | .4064 | 262.2 | 517400 | 4885 | 2423 | 0.06013 | 0.06576 | .4 |
| - | 300 | - | - | 61/.099 | 61/2.51 | .891 | 22.6 | .4605 | 297.1 | 586500 | 5536 | 2746 | 0.05306 | 0.05803 | - |
| - | - | 600000 | - | 61/.0992 | 61/2.52 | .893 | 22.7 | .4624 | 298.3 | 588700 | 5558 | 2747 | 0.05285 | 0.05780 | - |
| .5 | - | - | - | 61/.103 | 61/2.62 | .927 | 23.5 | .4985 | 321.6 | 634700 | 5992 | 2972 | 0.04902 | 0.05361 | .5 |
| - | - | 700000 | - | 61/.1071 | 61/2.72 | .964 | 24.5 | .5389 | 347.7 | 686200 | 6479 | 3214 | 0.04534 | 0.04959 | - |
| - | - | 750000 | - | 61/.1109 | 61/2.82 | .998 | 25.4 | .5779 | 372.8 | 735800 | 6947 | 3446 | 0.04229 | 0.04625 | - |
| - | - | 750000 | - | 91/.0908 | 91/2.31 | .999 | 25.4 | .5778 | 372.8 | 735700 | 6948 | 3447 | 0.04229 | 0.04625 | - |
| .6 | |||||||||||||||
| .6 | - | - | - | 91/.093 | 91/2.36 | 1.023 | 26.0 | .6062 | 391.1 | 771800 | 7289 | 3616 | 0.04032 | 0.04409 | - |
| - | 400 | - | - | 61/.114 | 61/2.90 | 1.026 | 26.1 | .6106 | 393.9 | 777400 | 7341 | 3642 | 0.04002 | 0.04377 | - |
| - | - | 800000 | - | 61/.1145 | 61/2.91 | 1.031 | 26.2 | .6160 | 397.4 | 784300 | 7405 | 3673 | 0.03967 | 0.04338 | |
| - | - | 800000 | - | 91/.0938 | 91/2.38 | 1.032 | 26.2 | .6166 | 397.8 | 785100 | 7414 | 3678 | 0.03963 | 0.04334 | - |
| .75 | - | - | - | 91/.103 | 91/2.62 | 1.133 | 28.8 | .7435 | 479.7 | 946700 | 8940 | 4435 | 0.03287 | 0.03594 | .75 |
| - | 500 | 1000000 | - | 61/.1280 | 61/3.25 | 1.152 | 29.3 | .7698 | 496.6 | 980100 | 9254 | 4590 | 0.03174 | 0.03472 | - |
| - | - | 1000000 | - | 91/.1048 | 91/2.66 | 1.153 | 29.3 | .7697 | 496.6 | 980100 | 9255 | 4591 | 0.03175 | 0.03472 | - |
| .85 | - | - | - | 127/.093 | 127/2.36 | 1.209 | 30.7 | .8459 | 545.8 | 1077000 | 10173 | 5046 | 0.02889 | 0.03159 | .85 |
| - | 625 | - | - | 91/.117 | 91/2.97 | 1.287 | 32.7 | .9594 | 619.0 | 1222000 | 11536 | 5722 | 0.02547 | 0.02786 | - |
| - | - | 1250000 | - | 91/.1172 | 91/2.98 | 1.289 | 32.7 | .9627 | 621.1 | 1226000 | 11575 | 5742 | 0.02538 | 0.02776 | - |
| - | - | 1250000 | - | 127/.0992 | 127/2.52 | 1.290 | 32.8 | .9625 | 620.9 | 1225000 | 11574 | 5741 | 0.02539 | 0.02777 | - |
| 1.0 | - | - | - | 127/.103 | 127/2.62 | 1.339 | 34.0 | 1.0375 | 669.4 | 1321000 | 12478 | 6190 | 0.02355 | 0.02575 | 1.0 |
| - | - | 1500000 | - | 91/.1284 | 91/3.26 | 1.412 | 35.9 | 1.155 | 745.5 | 1471000 | 13893 | 6892 | 0.02115 | 0.02313 | - |
| - | - | 1500000 | - | 127/.1087 | 127/2.76 | 1.413 | 35.9 | 1.156 | 745.6 | 1471000 | 13897 | 6894 | 0.02115 | 0.02312 | - |
| - | 800 | - | - | 91/.132 | 91/3.35 | 1.452 | 36.9 | 1.221 | 787.7 | 1555000 | 14683 | 7284 | 0.02001 | 0.02188 | - |
| 1.25 | - | - | - | 127/.112 | 127/2.84 | 1.456 | 37.0 | 1.227 | 791.5 | 1562000 | 14754 | 7319 | 0.01992 | 0.02178 | 1.25 |
| 1.5 | - | - | - | 169/.107 | 169/2.72 | 1.605 | 40.8 | 1.490 | 961.3 | 1897000 | 17920 | 8889 | 0.01640 | 0.01794 | 1.5 |
| - | 1000 | - | - | 91/.147 | 91/3.73 | 1.617 | 41.1 | 1.514 | 976.8 | 1928000 | 18210 | 9033 | 0.01614 | 0.01765 | - |
| - | - | 2000000 | - | 127/.1255 | 127/3.19 | 1.632 | 41.5 | 1.540 | 993.8 | 1961000 | 18525 | 9189 | 0.01586 | 0.01735 | - |
| - | - | 2000000 | - | 169/.1088 | 169/2.76 | 1.632 | 41.5 | 1.541 | 993.9 | 1962000 | 18528 | 9191 | 0.01586 | 0.01735 | - |
|
British Sizes B.S.7: 1953 AND B.S.480: 1954 B & SG (AWG) Sizes Based on C.E.S.A C68A; A.S.T.M. B8-53 and I.P.C.E.A. 5-19-8 Classes B & C (preferred sizes) Metric Sizes V.D.E. 0255/51 and 0265/52 |
 |
British sizes The following tolerances on resistance are permitted in
|